Home / Shed Plans / 12×12 Barn Shed Plans – With Overhang – Free PDF
12x12 barn shed plans - free PDF download, material list. and drawings. DIY projects at Construct101

12×12 Barn Shed Plans – With Overhang – Free PDF

12×12 barn shed plans – with overhang – plans include a free PDF download, shopping list, cutting list, measurements, and step-by-step drawings.

12×12 Barn Shed Plans – Overview

12×12 Barn Shed Plans – Material List

Shopping List

Shopping List

Material for door and window was not added to this list.

Step 1 – Floor

  • 12 – 2×6 pressure treated – 12′
  • 4 – 4×4 pressure treated – 12′
  • 5 – 3/4″ tongue and groove plywood – 4’x8′ sheet

Step 2 – Walls

  • 12 – 2×4 – 12′
  • 48 – 2×4 – 8′

Step 3 – Truss – Rafters

  • 24 – 2×6 – 10′
  • 2 – 1/2 plywood – 4’x8′ sheet
  • 2 – 2×4 – 8′
  • 1 – 2×6 – 16′

Step 4 – Siding

  • 14 – 2×4 – 8′
  • 18 – T1-11 exterior siding – 4’x8′ sheet

Step 5 – Roof Deck

  • 4 – 2×4 – 8′
  • 10 – 1/2″ plywood – 4’x8′ sheet

Step 6 – Shingles – Trim

8 – 1×4 – 8′

Hardware

  • 3 1/2″ galvanized nails
  • 2″ deck screws
  • 2″ galvanized nails
  • 2″ galvanized finishing nails
  • shingles
  • roof tacks
  • roofing felt
  • staples
  • drip edge

Cutting List

Cutting List

Material for door and window was not added to this list.

Step 1 – Floor

  • 2 – 2×6 pressure treated – 12′
  • 10 – 2×6 pressure treated – 11′ 9″
  • 4 – 4×4 pressure treated – 12′
  • 5 – 3/4″ tongue and groove plywood – 4’x8′ sheet (cut to size)

Step 2 – Walls

  • 6 – 2×4 – 12′
  • 6 – 2×4 – 11′ 5″
  • 48 – 2×4 – 7′ 6″

Step 3 – Truss – Rafters

  • 48 – 2×6 – 5′ (22.5-degree angle cut on both ends in the opposite directions)
  • 36 – 1/2 plywood – 1’4″ x 9 5/16″ (gussets, cut to size)
  • 2 – 2×4 – 5′ 2 13/16″
  • 1 – 2×6 – 14′ 8″

Step 4 – Siding

  • 12 – 2×4 – 8′ (cut to size)
  • 18 – T1-11 exterior siding – 4’x8′ sheet (cut to size)
  • 2 -2×4 – 8′ (blocking, cut to size)
  • 1 – 1/2″ plywood or siding – (cut to size)

Step 5 – Roof Deck

  • 16 – 2×4 – 1′ 9 3/4″
  • 10 – 1/2″ plywood – 4’x8′ sheet (cut to size)

Step 6 – Shingles – Trim

8 – 1×4 – 8′ (cut to size)

  • Step 1 – Floor

12x12 barn shed plans - floor frame.

The shed floor frame is built using pressure treated 2×6 and 4×4 lumber.

Cut two 2×6’s to 12′ long for the floor band. Cut ten 2×6’s to 11′ 9″ for the floor joist. Use 3 1/2 nails to assemble the floor frame. Floor joist will be 16″ O.C., assemble the floor frame as shown in illustration above.

Install the 4×4 – 12′ long skids to the bottom of the floor frame. Toenail 3 1/2″ nails through the floor frame and into the 4×4 skids.

Square the floor frame by measuring diagonally until both sides measure the same.

12x12 barn shed plans - floor deck.

Measure and cut to size the floor deck. Install the 3/4″ tongue and groove plywood for the floor deck. Install the plywood floor using 2″ deck screws. Screw through the plywood deck floor and into the floor frame.

  • Step 2 – Walls

The shed wall frames are built using 2×4 lumber.

12x12 barn shed plans - side walls.

Instructions for the side wall frames.

Cut four 2×4’s to 12′ long for the bottom and top plate. Cut two 2×4’s to 11′ 5″ long for the top double plate. Cut twenty eight 2×4’s to 7′ 6″ long for the wall studs.

Wall studs are spaced out 16″ O.C., assemble the side wall frame as shown on illustration above using 3 1/2″ nails.

Framing Door and Window

See the following pages for instructions on framing details for door and window:

Door Instructions

Window Instructions

12x12 barn shed plans - side wall frame close up look.

Illustration above shows a close up on the side wall frame ends.

12x12 barn shed plans - front and back wall frame.

Instructions for the front and back wall frames.

Cut four 2×4’s to 11′ 5″ long for the bottom and top plate. Cut two 2×4’s to 12′ long for the double top plate. Cut twenty 2×4’s to 7′ 6″ long for the wall studs.

Assemble the front and back wall frame as shown on illustration above using 3 1/2″ nails.

Framing Door and Window

See the following pages for instructions on framing details for door and window:

Door Instructions

Window Instructions

  • Step 3 – Truss – Rafters

The shed trusses are built using 2×6 lumber.

Cut and assemble one truss set, once you get a good fit use it as a template to build the rest.

12x12 barn shed plans - truss details.

The illustration above shows the details for the shed truss parts.

12x12 barn shed plans - upper and lower chord.

Cut forty-eight 2×6’s to 5′ long for the top and bottom chord rafters and roof trim. Cut 22.5-angle cuts on both ends in the opposite directions, see illustration above for details.

12x12 barn shed plans - lower chord, rafter end details.

Cut the ends on twenty of the rafters as shown on illustration above for the rafter lower chords.

12x12 barn shed plans - truss gusset.

To assemble the roof truss cut out thirty-six gussets as shown on illustration above using 1/2″ plywood.

12x12 barn shed plans - rafters and gusset assembly.

Assemble the top chord and lower rafter chord as shown on illustration above using 2″ nails.

12x12 barn shed plans - ridgeboard.

Cut two 2×4’s to 5′ 2 13/16″ long. Cut one 2×6 to 14′ 8″ long. Assemble the ridge board as shown on illustration above using 3 1/2″ nails.

12x12 barn shed plans - truss frame.

The roof trusses are spaced out 16″ O.C., assemble using 3 1/2″ nails.

  • Step 4 – Siding

12x12 barn shed plans - front and back top wall studs.

Cut twelve 2×4’s to size for the front and back top wall studs. Notch the top of the 2×4’s around the rafters and install using 3 1/2″ nails.

12x12 barn shed plans - siding.

Install the siding as shown on illustration above using 2″ finishing nails.

12x12 barn shed plans - 2x4 blocking.

Measure and cut 2×4’s and plywood or siding to size to close the opening between the roof deck and walls. Install as shown on illustration above.

  • Step 5 – Roof Deck

12x12 barn shed plans - 2x4 outriggers.

The front and back of the barn shed will have an 8″ overhang.

To make the overhang cut sixteen 2×4’s to 1′ 9 3/4″ long for the outriggers. To install the 2×4 outriggers notch the rafters and siding as shown on illustration above and secure with 3 1/2″ nails.

12x12 barn shed plans - roof trim.

Nail the remaining rafters to the 2×4 outriggers using 3 1/2″ finishing nails. The rafters will be used as the front and back roof trim.

12x12 barn shed plans - roof deck.

Measure and cut 1/2″ plywood for the roof deck. Install the roof deck using 2″ nails.

  • Step 6 – Shingles and Trim

12x12 barn shed plans - shingles and trim.

Cut 1×4’s to size for the corner trim, install using 2″ finishing nails.

Install roofing felt, drip edge, and shingles.

Like these 12×12 barn shed plans? Let me know, leave me a comment below. Share this link with your friends and your social media, thanks.
Construct101 offers free online version plans. These free plans also have a free print friendly PDF downloadable version free of ads. Click here to download.

One comment

  1. These plans are good. I love them wish i had time and money to build all.

Leave a Reply

Your email address will not be published. Required fields are marked *